Wouldn't building a website be more equivalent to playing the instrument? Presuming one has learned how to build a website, like a musician learned to play an instrument.
You can play an instrument knowing just to pluck a single note. But it's a lot more fun to play if you know a ton of different skills: you can say so much more.
I think the same holds true for coding. You can learn more skills all the time, all of which broaden the realm of what you can create when you sit down at a keyboard again (aka the playing the instrument part).
Likewise, the programming side of my work is generally pretty trivial (as is the case for probably 99% of most programming that happens in the world). It's the domain knowledge that makes things difficult/interesting/challenging.
As for those who wish to use his framework, it's probably not enough to use it alone. It's mostly just another instrument that can be played solo, but to orchestrate some web apps, one will have to include the JavaScript, HTML, CSS and probably a few other "instruments".
Apologies if I strained that analogy too much.